Some general considerations.

icao/recat.py

@@ -0,0 +1,22 @@
+# Recat departure separation in seconds
+# x = CAT A -> CAT F
+# y = CAT A -> CAT F
+# https://www.skybrary.aero/index.php/RECAT_-_Wake_Turbulence_Re-categorisation
+recatDeparture = [
+    [0, 100, 120, 140, 160, 180],
+    [0, 0, 0, 100, 120, 140],
+    [0, 0, 0, 80, 100, 120],
+    [0, 0, 0, 0, 0, 120],
+    [0, 0, 0, 0, 0, 100],
+    [0, 0, 0, 0, 0, 80],
+]
+
+#Recat Arrival in NM
+recatArrival = [
+    [3, 4, 5, 5, 6, 8],
+    [0, 3, 4, 4, 5, 7],
+    [0, 0, 3, 3, 4, 6],
+    [0, 0, 0, 0, 0, 5],
+    [0, 0, 0, 0, 0, 4],
+    [0, 0, 0, 0, 0, 3],
+]